Ok, I fucked this up. I accidentally overwrote this post with Mammal Colon Histology. So now I have to rewrite this fucker.
Today's Medical Topic: Histology of Hairy Mammal Skin
The Tissue Sample: Alrighty. Let's take a look.
You can see both main layers of the skin here. The very thin layer on top is the epidermis. All you can really see in this sample is a light pink line of stratum layers and some degraded and torn stratum corneum just above that.
Then you get into the dermis which has two main layers that are mostly indistinguishable on this slide. We can assume that the thinner layer on the top, the papillary layer is only a small portion of the dermal layer. The reticular layer takes up the bulk of the dermal layer.
Underneath that is the hypodermis which is not technically part of the skin. You can tell we are getting into this layer because you can see pockets of adipose tissue (one of which is outlined in red) which should not intrude into the dermal layer. The hair follicle does protrude into the hypodermis which is not unusual.
Now we are looking at the hair follicle itself. We can identify the root bulb and also the entire hair at this magnification. The dark pink blob is most likely a sebaceous gland that secretes oils to hydrate and protect hair.
If we move in closer we can see there is a hair matrix of rapidly dividing cells that produce the actual hair. You can also see the follicle wall but I am unable to identify any of the follicle wall layers. There is a nice close up of the sebaceous gland though
You can look around and see if you can identify anything else yourself. I hope you all enjoyed.
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| 25x magnification |
Then you get into the dermis which has two main layers that are mostly indistinguishable on this slide. We can assume that the thinner layer on the top, the papillary layer is only a small portion of the dermal layer. The reticular layer takes up the bulk of the dermal layer.
Underneath that is the hypodermis which is not technically part of the skin. You can tell we are getting into this layer because you can see pockets of adipose tissue (one of which is outlined in red) which should not intrude into the dermal layer. The hair follicle does protrude into the hypodermis which is not unusual.
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| 250x Magnification |
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| 400x Magnification |
You can look around and see if you can identify anything else yourself. I hope you all enjoyed.
Send questions or comments to dudaday@gmail.com
Disclaimer: I am not a health care provider, any information presented in this blog should not be considered advice it is mearly an outlet to slake my curiosity. You should always consult your primary medical provider for any concerns or illness. Unlike Tylenol, I am not approved by the FDA or American Medical Association to treat or provide relief for any ailment.
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